Surface pattern for a light bulb cover



FIG. 1 is a side elevation of the surface pattern for a light bulb cover; and,

FIG. 2 is a plan view of the surface pattern for a light bulb cover.

The contour of the cover is shown in broken lines for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a surface pattern for a light bulb cover, as shown and described. 